Square D PLA34100U44 A - 1000 A, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D PLA34100U44A, a 1000 A, 3-pole plug-in molded case circuit breaker designed to protect panelboards and load centers from overcurrent and short-circuit events. Built for fast, reliable protection, this unit is the dependable choice when uptime matters and panel safety is non‑negotiable.

Key benefits that set this breaker apart:

• Rapid plug-in installation for quick replacement and minimal panel downtime, keeping electrical systems up and running.
• Thermal-magnetic trip unit provides stable, repeatable protection across operating conditions, with a fast magnetic trip for high‑fault scenarios and a calibrated thermal response for gradual overloads.
• OEM‑level compatibility designed to work seamlessly with matching Square D load centers and panelboards, ensuring reliable fit and predictable performance.
• High‑amperage capacity at 1000 A, ideal for large branch circuits and feeders in commercial and light industrial environments.
• 3-pole configuration suitable for three‑phase systems, offering comprehensive protection for multi‑wire branches and complex panel layouts.

What this means in practice:

• : Use as main or feeder protection in residential, commercial, and light industrial panelboards where robust, long‑life overload and short‑circuit protection is required.
• : A thermal-magnetic design minimizes nuisance trips while preserving fast response to dangerous faults, helping protect equipment, wiring, and downstream devices.
• : The plug‑in style simplifies replacement during routine maintenance or panel upgrades, reducing service interruptions and labor time.
• : Engineered to integrate with Square D OEM load centers, providing consistent electrical characteristics and a predictable protection scheme across the panel lineup.

Technical snapshot

• Manufacturer: Square D
• Part Number: PLA34100U44A
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage Rating: 1000 A
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short‑circuit protection

Designed for installers and facility managers who demand precise protection with straightforward installation, the PLA34100U44A delivers consistent performance in demanding panel environments. Its combination of high‑capacity protection, quick‑connect plug‑in mount, and OEM‑compatible design makes it a practical, reliable choice for safeguarding electrical systems while keeping maintenance simple and predictable.